Player profile
Casteleijn, Diederick
Dossier
14 of 14 games analyzed.
Accuracy: 88.9%
Opened e4: 5/8Opened Nf3: 3/8
Castled kingside: 12Same-side castling: 11Opposite-side castling: 2Did not castle: 1Castled queenside: 1
Played on the queenside: 7Fianchettoed kingside: 4Fianchettoed queenside: 4Played in the center: 3
Kept the bishop pair: 11Backward pawn: 11Space advantage: 11Initiated exchanges: 11Active pieces: 10Sacrificed material: 8Isolated pawn: 7Missed tactics: 4Avoided exchanges: 2Played gambits: 1
Openings
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As White 8 games 4W 3D 1L
English Opening 2 games 1W 1D 0L
Anglo-Indian Defense 2 games 1W 1D 0L
King's Knight Variation
1 game
0W
1D
0L
Scandinavian Defense
1 game
1W
0D
0L
Italian Game 2 games 0W 1D 1L
Paris Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Two Knights Defense 1 game 0W 1D 0L
Polerio Defense, Bogoljubow Variation
1 game
0W
1D
0L
Zukertort Opening 1 game 1W 0D 0L
Black Mustang Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Scandinavian Defense 1 game 1W 0D 0L
Modern Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Pirc Defense 1 game 1W 0D 0L
Byrne Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Caro-Kann Defense 1 game 0W 1D 0L
Advance Variation 1 game 0W 1D 0L
Botvinnik-Carls Defense
1 game
0W
1D
0L
As Black 6 games 3W 0D 3L
Sicilian Defense 4 games 2W 0D 2L
Kan Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Mengarini Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Nyezhmetdinov-Rossolimo Attack 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Smith-Morra Gambit Accepted 1 game 1W 0D 0L
Paulsen Formation
1 game
1W
0D
0L
Queen's Gambit Declined 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Tarrasch Defense 1 game 0W 0D 1L
Classical Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Blunders Top 4 of 58
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 14 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.10.16 | Round 7: Skwarczynski, Marcin - Casteleijn, Diederick | 7.20 | 2026.10.16 Skwarczynski, Marcin (1173707) (1961) | 1 | 97.60% | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 | |
| 2026.10.15 | Round 6: Casteleijn, Diederick - Pazeriene, Diana | 6.19 | 2026.10.15 Pazeriene, Diana (12802190) (1966) | ½ | 81.60% | 1. Nf3 Nf6 2. c4 c5 3. b3 g6 | |
| 2026.10.15 | Round 5: Casteleijn, Diederick - Driza, Arta | 5.30 | 2026.10.15 Driza, Arta (4700694) (1923) | 1 | 83.00% | 1. Nf3 Nc6 2. g3 e5 3. d3 d5 | |
| 2026.10.14 | Round 4: Parker, Glen D - Casteleijn, Diederick | 4.18 | 2026.10.14 Parker, Glen D (411949) (1962) | 0 | 82.90% | 1. e4 c5 2. a3 g6 3. Nc3 Bg7 | |
| 2026.10.13 | Round 3: Casteleijn, Diederick - Stein, Robert | 3.3 | 2026.10.13 Stein, Robert (12921084) (2389) | 0 | 86.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 | |
| 2026.10.13 | Round 2: Nguyen, Johnny - Casteleijn, Diederick | 2.20 | 2026.10.13 Nguyen, Johnny (2612291) (1897) | 1 | 96.10% | 1. d4 d5 2. c4 e6 3. cxd5 exd5 | |
| 2026.10.12 | Round 1: Casteleijn, Diederick - Woolf, Ben | 1.25 | 2026.10.12 Woolf, Ben (343400671) (1827) | 1 | 99.30% | 1. e4 d5 2. exd5 Nf6 3. Be2 Nxd5 | |
| 2024.10.25 | Round 7: Casteleijn, Diederick - Unruh, Charles M | 7.24 | 2024.10.25 Unruh, Charles M (2022184) (1911) | 1 | 86.90% | 1. e4 d6 2. d4 Nf6 3. Nc3 g6 | |
| 2024.10.24 | Round 6: Kedzierski, Slawomir - Casteleijn, Diederick | 6.15 | 2024.10.24 Kedzierski, Slawomir (1134949) (2013) | 0 | 86.00% | 1. d4 d5 2. Nf3 c5 3. c4 e6 | |
| 2024.10.24 | Round 5: Casteleijn, Diederick - Michalski, Daniel | 5.16 | 2024.10.24 Michalski, Daniel (1110640) (2011) | ½ | 83.70% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.10.23 | Round 4: Jeselson, Andrew - Casteleijn, Diederick | 4.8 | 2024.10.23 Jeselson, Andrew (30950635) (1858) | 0 | 87.70% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2024.10.22 | Round 3: Casteleijn, Diederick - Helbig, Mark | 3.6 | 2024.10.22 Helbig, Mark (4675622) (2280) | ½ | 90.60% | 1. e4 c6 2. d4 d5 3. e5 c5 | |
| 2024.10.22 | Round 2: Lebrun, Roger - Casteleijn, Diederick | 2.14 | 2024.10.22 Lebrun, Roger (2606216) (1984) | 1 | 91.90% | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 | |
| 2024.10.21 | Round 1: Casteleijn, Diederick - Bublys, Vaidotas | 1.15 | 2024.10.21 Bublys, Vaidotas (12800163) (1872) | 1 | 91.30% | 1. Nf3 d5 2. c4 Nf6 3. e3 g6 |